Wheel-hub.



I s R LALKAKA.

WHEEL HUB. APPLICATION FILED MAY, 23. 1914.

Patented Oct. 5, 1915.

scream: RATANJ'I LAFLKAKA, or Lennon, ENGLAND.

WHEEL-HUB.

LifidAltl Application filed May 2:}, 1914-.

Tor'zZZ, whom it may concern:

Be it known that I, SonAnJI RATANJI LALKAKA, a subject of the Emperor of In- I'dia, residing in London, England, have invented a certain new and useful Improved lVheel-Hub, of which the following is a, 5 of the key-ways and the straight sides of partly in section, and Fig. fl an end elevaspecification.

This invent on relates to detachable wheel hubs for vehicles, particularly for motorcars.

According to the present invention the hub is divided into two concentric parts, one

part being provided with teeth and the other with key-ways with which the teeth can engage. One side of each tooth is provided with projections which engage corresponding recesses in the walls of the key-ways, the

- greatest circumferential width of the teeth being equal to or less than the smallest width of the key-ways so as to allow the entry of the teeth into the key-ways, and the projections are held in engagement with the recesses by means of locking keys inserted between the straight sides of the teeth and the key-ways, said keys being held in place by suitable means such as spring pins. One of the two concentric pa-rts is the shell of the hub, to which the spokes are attached, while the other is a boss firmly secured to the rotary axle, or rotatably mounted on the stub-axle, if applied to the front wheel of a motor vehicle;

In the accompanying drawings a construction suitable for the driving wheels of a motor-car is shown, Figure 1 being a. side elevation partly in section, Fig. 2 a section on the line H.II in Fig. 1, Fig. 3 a plan tion. 1

The end 1 of the back axle is squared, and the boss 2 is fitted over this squared end and. secured by nuts 3. The boss is provided with two opposed key-ways 4 one side 5 of each key-way being straight, and the other side 6 having a recess as shown in full lines. Of course more than one recess can be provided, as shown in' dotted lines, and they can be of any shape.

The shell 7 is provided on its inner surface with teeth 8 having projections on one side exactly similar in shapeto the recesses in the sides 6' of thekey-ways l, and the width across the widest part of the teeth is somewhat less than the width across the narrowest part of the key-ways, so as to Specification of Letters Patent.

Patented @ct. 5, 1915.

Serial I'To. 840,451.

allow of the entry of the teeth into the keyways.

The locking keys are formed by the two prongs of a U 'shaped fork, and their width is such that when inserted between the sides 9 and a lifting-pin 14 screwed into the pin 10 and sliding in a slot cut in the boss, allows thepin 10 to be lifted to allow of the withdrawal of the keys.

In mounting the wheel, the shell is placed over the boss with the teeth engaging the key-ways, the wheel is turned slightly so as to cause the projections on the teeth to engage with the recesses in the key-ways, the ,pin 10 is lifted, the keys 9 inserted, and the pin 10. allowed to drop. The wheel will then be held positively on the axle, without any possibility of accidental loosening. To remove the wheel, the pin 10 is lifted, the keys withdrawn and the wheel turned backward so as to disengage the projections from the recessds, when it can be removed freely. If the invention is to be applied to the front wheels of a motor vehicle, the bosses 2 are of course rotatably mounted on the stubaxles.

What I claim as my invention and desire to secure by Letters Patent is 1. A detachable wheel hub comprising in combination two concentric hub-members one of which is provided with key-wayseach having a side formed with recesses and another side straight and unrecessed, teeth narrower than said key-ways on the other hub-member adapted to enter the key-ways, projections on one side of each of said teeth adapted to engage the said recesses in the key-ways, locking keys adapted to be insert: ed between the straight sides of the teeth and of the key-ways to hold the projections in engagement with the recesses, and means for holding the locking-keys in place.

2.. A detachable wheel hub comprising in adapted to enter the combination a boss adapted to be fixed to the end of the rear axlejo't a motor vehicle and provided with key-ways each having a side formed with recesses and another side one of which is provided with key-ways each having a side formed with recesses and another side straight and nnrecessed, teeth narrower than said key-ways on the other hub-member adapted to enter the key-ways, projections on one side of each of said teeth adapted to engage the said recesses in the key-ways, locking keys adapted to be inserted between the straight sides of the teeth and of the key-ways to hold the projections in engagement with the recesses, a cross-bar connecting the keys together, a pin adapted to lie across said cross-bar, a spring-adapted to hold the pi n in the operative position, and means for moving the pin out of the path of the cross-bar.

4. A detachable, wheel hub comprising in combination a boss adapted to be fixed to the end of the rear axle of a motor vehicle and provided with key-ways eachhaving a side formed with recesses and another side straight and lll'll'GCGSSOfl, a hub-shell adapted to be placed over the boss, teeth in said shell narrower than the key-ways and engaging therewith, projections von said teeth adapted to enter the said recesses inithe key-ways,

locking keys adapted to be inserted between.

the straight sides of the teeth and of the I key-ways to hold the projections in engagement with the recesses, a cross-bar connect-- ing the keys together, a pin adaptedtoli'e across said cross-bar, a spring adapted to hold the pin in the operative position, and meansfor moving the pin out of the path of the cross-bar.

'5. A detachable wheel hub comprising in v combination a boss adapted to be fixed to the end of the rear axle of a motor vehicle and provided with key-ways each havinga side formed with recesses and another side straight and unrecessed, a hub-shell adapted to be placed over the b0ss,teeth insaid shell narrower than the key-ways and engaging therewith, projections on said teeth adapted to enter the said recesses'in the key-ways, locking keys adapted to be inserted between the straight sides. of the teeth and of the key-ways to hold the projections in engagement with the recesses, a hub-cap adapted to be scsrewed on the'outer end of the hub-shell and having holes to allow the keys to pass.

two opposed bosses in the outer part of said cap having coaxial holes, a pin sliding in said holes and having a lifting pin whereby it may be operated by hand, and a spring adapted to keep the pin in its operative position in the space between the two bosses.

In testimony whereof I have signed my name tothis specification in the presence of two subscribingwitnesses.

SORABJ I RATANJI' LALKAKA. Witnesses: KAIKHASHRU H. SARYA MAY J. BoBo'r'roM. 

